Figure 1:
Figure 2:
Figure 3:
Globodera pallida progeny cysts, final population (Pf), and RF over a 3-yr rotation_a
| Rotation sequenceb | End year 1 | End year 2 | End year 3 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Progeny cystsc | Pf (eggs/g soil)d | RF (Pf/Pi)e | Progeny cysts | Pf (eggs/g soil) | RF (Pf/Pi) | Progeny cysts | Pf (eggs/g soil) | RF (Pf/Pi) | |
| INN-INN-RB | 0.1 ± 0.1 | 1.28 ± 0.07 a | 0.26 ± 0.02 a | 1.0 ± 0.2 a | 0.36 ± 0.08 a | 0.07 ± 0.02 a | 0.5 ± 0.1 a | 0.06 ± 0.01 ab | 0.011 ± 0.002 ab |
| INN-S. sisym.-RB | 0.1 ± 0.1 | 1.28 ± 0.07 a | 0.26 ± 0.02 a | 0.1 ± 0.1 b | 0.17 ± 0.06 b | 0.04 ± 0.01 b | 0.2 ± 0.1 bc | 0.04 ± 0.01 abc | 0.008 ± 0.002 abc |
| INN-Barley-RB | 0.1 ± 0.1 | 1.28 ± 0.07 a | 0.26 ± 0.02 a | 0.3 ± 0.2 b | 0.16 ± 0 b | 0.03 ± 0.01 b | 0.4 ± 0.1 b | 0.07 ± 0.02 a | 0.013 ± 0.004 a |
| S. sisym.-INN-RB | 0 | 0.79 ± 0.05 b | 0.16 ± 0.01 b | 0 b | 0.27 ± 0.07 ab | 0.05 ± 0.01 ab | 0.1 ± 0 bc | 0.06 ± 0.01 ab | 0.010 ± 0.002 ab |
| S. sisym.-S. sisym.-RB | 0 | 0.79 ± 0.05 b | 0.16 ± 0.01 b | 0 b | 0.15 ± 0.04 b | 0.03 ± 0.01 b | 0 c | 0.02 ± 0.01 c | 0.003 ± 0.001 c |
| S. sisym.-Barley-RB | 0 | 0.79 ± 0.05 b | 0.16 ± 0.01 b | 0 b | 0.14 ± 0.04 b | 0.03 ± 0.01 b | 0.2 ± 0.1 b | 0.04 ± 0.01 bc | 0.007 ± 0.003 bc |
Remaining G_ pallida encysted egg densities, viability, and hatch at the end of the first year of rotation_a
| Year 1 treatment | Remaining encysted eggs per cyst | Remaining viable encysted eggs per cystb | Egg viability (%)b | Egg hatch in PRD (%)c |
|---|---|---|---|---|
| ‘Innovator’ resistant potato | 76.4 ± 5.5 | 63.8 ± 3.7 a | 88.5 ± 2.0 a | 4.2 ± 0.6 |
| S. sisymbriifolium | 73.0 ± 5.1 | 39.3 ± 2.5 b | 58.4 ± 3.6 b | 5.4 ± 0.7 |
Rotation sequences with corresponding abbreviations_
| Year 1 | Year 2 | Year 3 | Rotation sequence abbreviationa |
|---|---|---|---|
| ‘Innovator’ resistant potato | ‘Innovator’ resistant potato | ‘Russet Burbank’ susceptible potato | INN-INN-RB |
| ‘Innovator’ resistant potato | S. sisymbriifolium | ‘Russet Burbank’ susceptible potato | INN-S. sisym.-RB |
| ‘Innovator’ resistant potato | Barley (non-host) | ‘Russet Burbank’ susceptible potato | INN-Barley-RB |
| S. sisymbriifolium | ‘Innovator’ resistant potato | ‘Russet Burbank’ susceptible potato | S. sisym.-INN-RB |
| S. sisymbriifolium | S. sisymbriifolium | ‘Russet Burbank’ susceptible potato | S. sisym.-S. sisym.-RB |
| S. sisymbriifolium | Barley (non-host) | ‘Russet Burbank’ susceptible potato | S. sisym.-Barley-RB |